US PATENT SUBCLASS 70 / 369
.~.~.~.~.~.~ Key only controlled

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
336  DF  .~ Key {10}
344  DF  .~.~ Single key {4}
348  DF  .~.~.~ Tumbler type {5}
357  DF  .~.~.~.~ Cylinder type {9}
367  DF  .~.~.~.~.~ Cylinder and plug assembly {2}
369.~.~.~.~.~.~ Key only controlled

DEFINITION

Classification: 70/369

(under subclass 367) Subject matter wherein release and consequent removal of the plug from the cylinder is effected by a key only.